Fatty acid soap deinking agent and preparing method and application thereof

A technology of fatty acid soap and deinking agent, applied in the application of chemicals in paper products, pulping and papermaking fields, can solve the problems of high waste paper consumption, cumbersome compounding process optimization, large fiber loss, etc., to achieve good whiteness and Yield, good ink release, good bleachability

Active Publication Date: 2016-11-09
广州造纸股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that different types of waste paper have different requirements for surfactants due to different printing methods, and the compounding process is more cumbersome. Surfactants are ideal for white waste paper, and are applied to #8 waste paper with low ash content , Due to the strong foaming power of the surfactant, the fiber loss during the deinking process of waste paper is relatively large, and the consumption of waste paper is relatively high, and the cost increases. There are a large number of small foams in the circulating slurry-water mixture, which makes it difficult to increase the output of the thickening section

Method used

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  • Fatty acid soap deinking agent and preparing method and application thereof
  • Fatty acid soap deinking agent and preparing method and application thereof
  • Fatty acid soap deinking agent and preparing method and application thereof

Examples

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Embodiment

[0026] For the actual production line, VOITH’s ECO horizontal flotation cell is selected, and the raw material waste paper used is 100% #8 American waste paper, so the appropriate amount of foam is matched with #8 waste paper to produce high-quality deinking slurry, and fatty acid soap is selected Deinking agents are used in deinking systems. In each embodiment, the fatty acid soap deinking agent prepared by combining the fatty acid soap carbon chains with various greases is applied to the deinking of #8 waste paper.

[0027] (1) Fatty acid soap carbon chain ratio:

[0028]

[0029] (2) the preparation method of above-mentioned fatty acid soap deinking agent:

[0030] Select natural oils (palmitic acid, tallow, mutton oil, lard, castor oil, coconut oil), analyze the carbon chain distribution of each oil, and then calculate the required amount of each oil according to the carbon chain demand of fatty acids after mixing. Each type of oil is matched according to the carbon c...

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PUM

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Abstract

The invention discloses a fatty acid soap deinking agent and a preparing method and application thereof. The deinking agent is formed by mixing and saponification of various fatty acids. The fatty acids include, by weight, 30-40% of oleic acid, 5-10% of linoleic acid, 9-15% of stearic acid, 25-35% of palmitic acid, 4.5-10% of myristic acid and 4.8-8.5% of lauric acid. The deinking agent can be applied to preparation of deinked stock by means of #8 United States waste paper. The fatty acid soap deinking agent is prepared through fatty acid compounding by means of natural oil, a surfactant does not need to be added additionally, and ink detachment and ink emersion can be well achieved; meanwhile, the stock has high bleachability, so that final whiteness and yield of the stock are high.

Description

technical field [0001] The invention relates to the technical field of pulping and papermaking, in particular to the application of a deinking agent in a pulping deinking section and a preparation method thereof, and belongs to the field of application of chemicals in paper products. Background technique [0002] In recent years, with the continuous improvement of living standards and the increase in the cost of manual sorting of waste paper, the types of paper in #8 waste paper have become more and more complex. Different types of waste paper, due to different printing methods, ink accounts for the total solids There is a certain difference in the ratio of the amount of substances, and the greater the proportion of ink, the greater the difficulty of deinking will naturally increase. In #8 waste paper, due to the complex composition of waste paper and more impurities, there are new inks such as UV-curable ink, laser printing ink, and benzene rubber printing ink in waste pape...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/02
CPCD21C5/025D21C5/027Y02W30/64
Inventor 陈坤亭周耘焦东王卫国李亮韦祁王云卓刘鑫宇陈丹雄岑志辉
Owner 广州造纸股份有限公司
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